Cardboard box bridge



FIG. 1 is a perspective view of the cardboard box bridge of the instant invention;

FIG. 2 is a front view thereof,

FIG. 3 is the rear view thereof,

FIG. 4 is a right side view thereof, not shown is the left side view forming a mirror image of said right side view;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a top view thereof. 

CLAIM The ornamental design for a cardboard box bridge, as shown and described. 